Home / 211,730,721.20-317,596,081.80-84,079,905.20

Finding the Fourth Proportional to 211,730,721.20, 317,596,081.80 and 84,079,905.20

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Solution

The fourth proportional to 211,730,721.20, 317,596,081.80 and 84,079,905.20 is: 126,119,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,730,721.20 : 317,596,081.80 = 84,079,905.20 : x
  2. Step 2: Convert to fraction form
    211,730,721.20/317,596,081.80 = 84,079,905.20/x
  3. Step 3: Cross multiply
    211,730,721.20x = 317,596,081.80 × 84,079,905.20
  4. Step 4: Simplify right side
    211,730,721.20x = 26,703,448,449,635,448
  5. Step 5: Solve for x
    x = 26,703,448,449,635,448/211,730,721.20
  6. Step 6: Final answer
    x = 126,119,857.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.